GMC is part of GM, the largest automaker in the U.S. GMC stands for General Motors Truck Company. It came from merge of Rapid Motor Vehicle Company, Reliance, and Randolph in 1912. GMC produced over 500,000 vehicles for the United States Military during World War II.

GMC once manufactured ambulances and fire trucks.

GMC's most reported problem on RepairPal is associated with erratic fuel gauges on some GMC Envoy models.